Electrolysis summarized

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A brief overview of electrolysis

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Electrolysis summarized

  1. 1. A brief overview of what electrolysis is and how it works
  2. 2. Electrolysis is the chemical separation of an ionic compound using a direct electrical current. WHAT IS ELECTROLYSIS?
  3. 3. Key points in electrolysis
  4. 4. THE ELECTROLYTIC CELL The cathode is negatively charged. It attracts positively charged ions (cations)The anode is positively charged. It attracts negatively charged ions (anions) The power source provides electrical current that gives the electrodes their respective charges These are known as electrodes. They are usually a metallic (or in the case of graphite – a non- metallic) conductor
  5. 5. HOW ELECTROLYSIS WORKS Anions move towards the positive electrode (anode). In doing so, they lose electrons to become a neutral element. nXn- - ne- -> Xn The cations move towards this negatively charged electrode (cathode). In doing so, they gain electrons to become an electrically neutral element. Yn+ + ne- -> Y The electrons from the anions then move along the circuit through the power source to the negative electrode These electrons then provide the negative charge for the negative electrode (cathode)
  6. 6. HOW ELECTROLYSIS WORKS Anions move towards the positive electrode (anode). In doing so, they lose electrons to become a neutral element. nXn- - ne- -> Xn The cations move towards this negatively charged electrode (cathode). In doing so, they gain electrons to become an electrically neutral element. Yn+ + ne- -> Y The electrons from the anions then move along the circuit through the power source to the negative electrode These electrons then provide the negative charge for the negative electrode (cathode)

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